ccna

1. Which statement best describes a WAN?

A WAN interconnects LANs over long distances.*
A WAN is a public utility that enables access to the Internet.
WAN is another name for the Internet.
A WAN is a LAN that is extended to provide secure remote network access.
2. Connecting offices at different locations using the Internet can be economical for a business. What are two important business policy issues that should be addressed when using the Internet for this purpose? (Choose two.)

addressing
bandwidth
privacy*
security*
WAN technology
3. What is a disadvafntage of a packet-switched network compared to a circuit-switched network?

higher cost
fixed capacity
less flexibility
higher latency*
4. A company is considering updating the campus WAN connection. Which two WAN options are examples of the private WAN architecture? (Choose two.)

cable
leased line*
Ethernet WAN*
municipal Wi-Fi
digital subscriber line
5. Which statement describes a characteristic of dense wavelength division multiplexing (DWDM)?

It supports the SONET standard, but not the SDH standard.
It enables bidirectional communications over one pair of copper cables.
It can be used in long-range communications, like connections between ISPs.*
It assigns incoming electrical signals to specific frequencies.
6. Which WAN technology can serve as the underlying network to carry multiple types of network traffic such as IP, ATM, Ethernet, and DSL?

ISDN
MPLS*
Frame Relay
Ethernet WAN
7. Which two WAN technologies are more likely to be used by a business than by teleworkers or home users? (Choose two.)

cable
DSL
Frame Relay*
MetroE*
VPN
8. The security policy in a company specifies that the staff in the sales department must use a VPN to connect to the corporate network to access the sales data when they travel to meet customers. What component is needed by the sales staff to establish a remote VPN connection?

VPN gateway
VPN appliance
VPN concentrator
VPN client software*
9. How many DS0 channels are bundled to produce a 1.544 Mbps T1 line?

2
12
24*
28
10. What function is provided by Multilink PPP?

spreading traffic across multiple physical WAN links*
dividing the bandwidth of a single link into separate time slots
enabling traffic from multiple VLANs to travel over a single Layer 2 link
creating one logical link between two LAN switches via the use of multiple physical links